Flickering screen

[Omaha1]

The screen flickers in regular intervals of approximately 2 seconds going from dim to bright.  It seems to occur when the battery charge is below 20%  and when the product is plugged in.  It stops when it is unplugged.

[Betty0610]

@Omaha1

Welcome to the HP Support Community.

Does this happen if you connect the Laptop to an external monitor as well?

Let's also perform a battery test:

• Make sure the power cord and adapter is connected to the system and wall outlet.
• Press and hold the power button until the computer turns off completely.
• Turn on the computer.
• Immediately press the F2 key repeatedly, about once every second, until the UEFI Hardware Diagnostics screen is displayed.
• In the UEFI Main menu, select Component Tests.
• In the Component Tests menu, select Power.
• In the Power menu, select the battery test.

Let us know what happens.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[Betty0610]

Try connecting it to an external monitor to check if the flickering occurs there too.

Also, you can check in BIOS if this occurs: Tapping the ESC key at the beginning of the HP welcome screen is supposed to get you to the menu of options. Then select the F10 option to access the BIOS.

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!

Thanks!

[Omaha1]

More info that suggests the source of the problem.  When the computer is plugged in and is on, the battery does not charge and continues to discharge.  This is when the screen flashes.  The computer recognizes that it is plugged in but does not show that it is charging.  Flashing stops as soon as it is unplugged.

Clicking the battery icon  shows battery flashes between showing plugged in and showing on battery.

[KrazyToad]

@Omaha1

Please reinstall the Microsoft ACPI Compliant Control Method Battery

Step 01. Click on the Start Button
Step 02. Type "Device Manager" in the start search box & open the Device Manager
Step 03. Look for Batteries and expand it by click on the + symbol on the left
Step 04. Right Click on "Microsoft ACPI Compliant Control Method Battery" & uninstall
Note: This Battery driver will get re-installed automatically when you restart the Notebook again
Step 05. Please Shutdown the Notebook
Step 06. Remove the Battery and unplug the Power Adapter ( For Notebooks with Removable Batteries )
Step 07. Press and Hold the Power Button for full 1 Minute
Step 08. Go ahead and put back the Battery and connect the Power Adapter and restart

Next update the BIOS from this Link: https://support.hp.com/us-en/drivers

Next I suggest you download and run the HP Support Assistant from this Link: https://www8.hp.com/us/en/campaigns/hpsupportassistant/hpsupport.html?jumpid=va_r602_us/en/any/psg/p...

HPSA will automatically search for all the latest drivers for your Notebook

1. Click My devices in the top menu, and then click Updates in the My PC or My notebook pane.

   

2. Click Check for updates and messages to scan for new updates.

   

3. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.

4. Click the update name for a description, version number, and file size.

5. Select the box next to any updates you want to install, and then click Download and install.

Also ensure Windows is up to date.

Select the Start  button, and then go to Settings  > Update & security  > Windows Update , and select Check for updates. If Windows Update says your device is up to date, you have all the updates that are currently available

Keep me posted how it goes

Thank you and have a wonderful day 😊

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.

Let me know how it goes 😊

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.